Yarn carrier for hosiery knitting machines



Aug. 17, 1954 BARRETT YARN CARRIER FOR HOSIERY KNITTING MACHINES 2 Sheets-Sheet 1 Filed Dec. 7, 1949 LEON BARRETT BY W ATTORNEYS.

2 Sheets-Sheet '2 FIG. l3

INVENTOR.

LEON BARRETT ATTORNEYS.

Aug. 17, 1954 BARRETT YARN CARRIER FOR HOSIERY KNITTING MACHINES Filed Dec. '7, 1949 Patented Aug. 17, 1954 YARN CARRIER FOR HOSIERY KNITTING MACHINES Leon Barrett, Philadelphia, Pa., assignor to David L. Subin, Lansdale, Pa.

Application December 7, 1949, Serial No. 131,605

6 Claims.

This invention relates to yarn carriers used on hosiery machines. These yarn carriers hold yarn guide tubes which must be replaced for various reasons. Thus far the industry has been unable to provide a yarn carrier in which the yarn guide tube could be replaced with comparative ease and speed. By the term comparative ease and speed I mean within a half minute.

I have solved this problem by constructing a yarn guide carrier so that it terminates in two fingers; forming a yarn guide tube receiving chamber between said fingers; forming a yarn guide tube clamping button receiving chamber in one of said fingers and so positioning same that it communicates with the yarn guide tube receiving chamber; forming a yarn guide tube clamping button so that it has a continuous outer surface which is indented for a short portion thereof; and positioning the yarn guide tube clamping button in said yarn guide tube clamping button receiving chamber. The diameter of the clamping button and the distance D between the axes AA and B--B of the two chambers are such that the unindented face of said button extends into the yarn guide tube receiving chamber a distance slightly greater than the total diametric clearance between said yarn guide tube and yarn guide tube receiving chamber. The indentation formed in the outer surface of said yarn guide tube clamping button is of such depth that the portion of the body member so indented does not extend into the yarn guide tube receiving chamber. I provide the button with means for readily turning same as for instance a slot which will receive the end of a screw driver or the like. The button is preferably but need not necessarily be solid. It may be a hollow cylinder. But it must have a continuous outer wall of such thickness that it will not be distorted by the clamping pressure which it will be called upon to exert. This outer wall cannot be split. Therefore, in the instances where the clamping button is not solid it is in the form of a continuous .or closed ring or annulus. But it is never in the form of a split ring or split annulus. Because of said structure the yarn guide tube clamping button can readily be moved from a clamping to an unclamping position or vice versa by means of a simple readily available tool.

In the clamping position the button is so turned that an unindented portion thereof extends into the yarn guide tube receiving. chambar and co-operates with the opposite. wall of said chamber to clamp the yarn guide tube in position.

In the unclamping position the button is so positioned that the indented portion thereof faces the yarn guide tube receiving chamber. In this position no portion of the button extends into said yarn guide tube receiving chamber since the indentation has .een made of such form and depth that said portion of said button should not extend into said yarn guide tube receiving chamber. As a result the yarn guide tube may be freely removed from or inserted into the yarn guide tube receiving chamber when said yarn guide clamping button is in said unolamping position.

In said drawings Fig. l is a perspective view of my novel yarn carrier. The yarn guide tube clamping button is in the clamping, locked, or closed position.

Fig. 2 is an enlarged plan view or" the lower fragment of the yarn carrier shown in Fig. 1 with the yarn guide tube and yarn guide tube clamping button shown detached from the yarn carrier.

Fig. 3 is a section through the fragment shown in Fig. 2 taken along the line l3-i i of Fig. 1.

Fig. 4 is an enlarged section of a fragment taken along the line 4- 3 of Fig. 2. The scale is about four times that used in making Figs. 2 and 3.

Fig. 5 is an enlarged perspective view of the yarn guide tube clamping button as it appears before it is attached to and made part of the yarn carrier. The scale is the same as that used in drawing. Fig. i.

Fig. 6 is a section taken along the lines 6&

of Fig. 5. The dot and dashlines show the lower end as it appears after it is attached to and made part of the yarn carrier.

Fig. 7 is an enlarged perspective view of a modification of the yarn guide tube clamping button. It is taken from an angle about counterclockwise to that from which Fig. 5 was made.

Fig. 8 is a section along the line 8-3 of 7. The dot and dash lines show the lower end as it appears after it is attached to and made part of the yarn carrier. The scale is the same as that used in making Fig. 5.

Fig. 9 is a plan view, made on the same scale as Figs. 2 and 3, of the lower fragment of the yarn carrier shownin'Fig. 1 with the yarn guide tube clamping button in the unolamping, open or unlocked position.

Fig. 10 is a section taken through Fig. 9 on the line 53-13 of Fig. 1.

Fig. 11 is a section of a fragment, made on the 3 same scale as Fig. 4, taken along the line il| of Fig. 9.

Fig. 12 is a plan view, made on the same scale as Figs. 2, 3, 9 and 10, of the lower fragment of the yarn guide carrier shown in Fig. 1. The yarn guide tube and the yarn guide tube clamping button are in the clamped, locked or closed position.

Fig. 13 is a section of the fragment shown in Fig. 12 taken on the line 13-i3 of Fig. 1.

Fig. 14; is a section of a fragment, made on the same scale as Figs. 4 and 11 taken along the line Hii i of Fig. 12.

Referring more particularly to the drawings, wherein similar reference numerals denote similar parts, reference numeral I denotes the yarn carrier as a unit.

The yarn carrier l consists of a main body member 2, a yarn guide tube 3, and a solid yarn guide tube clamping button 4 which is rotatably mounted in the finger 5 of said body member 2. The body member 2 terminates at its lower end in the two fingers 5 and 6 formed by the slit 7 and slot 8. It has formed therein, near the lower end thereof, the longitudinal yarn guide tube receiving chamber 9, which receives the main body portion ii of the yarn guide tube 3 and which terminates at its upper end in a smaller chamber it. The junction of the chambers 9 and I form a shoulder 13 which contacts with the upper face M of said yarn guide tube 3 to limit the motion of said yarn guide tube within said chamher a.

The yarn guide tube 3 and yarn guide tube receiving chamber 9 are of the same cross-section. Said cross-section may be of any shape desired. In the embodiment here shown the yarn guide tube 3 and yarn guide tube receiving chamber 9 are circular in cross-section. The relative diameters of the yarn guide tube 3 and of the yarn guide tube receiving chamber are preferably such as to permit the tube readily to be inserted and removed from the chamber with the least clearance between the two possible.

The finger of said yarn guide body member 2 has formed therein a yarn guide tube clamping button receiving chamber 15 which communicates with the yarn guide receiving tube chamber 9 through the curved opening 28. The upper edge !6 and lower edge ll of said yarn guide tube clamping button receiving chamber 55 are beveled.

Positioned. in said yarn guide tube clamping button receiving aperture i5 is the yarn guide tube clamping button 5. Said yarn guide tube clamping button 4 consists of a solid cylindrical main body member 18 having a diameter which is slightly less than that of the yarn guide tube clamping button receiving chamber l5 so that it will rotate therein with the least possible play. Said clamping button body member l8 terminates at its upper end is in a shoulder 20 the underside 2! or" which is beveled to conform with the bevel formed at the upper edge of the yarn guide tube clamping button receiving aperture l5. The lower end :22 of said button body member 13 is upset after it is inserted into the yarn guide tube clamping button receiving aperture 15 to form the shoulder 23 the upper face 24 of which is beveled to conform with the bevel i'i formed at the lower edge of said yarn guide tube clampin button receiving aperture !5. This is shown by the dot and dash lines in Figs. 6 and 8 and by the full lines in Figs. 11 and 14. The yarn guide tube clamping button body member is also has formed therein a groove or indentation 25 which is of such depth that said indented portion of said body member l8 of the yarn guide tube clamping button 5 will not extend into the yarn guide tube receiving chamber 9 when said button is in the open, unclamped or unlocked position. I prefer to make said indentation or groove of such depth and curvature that it will conform with and be a continuation of the wall 26 of the yarn guide tube receiving chamber 9 when said yarn guide tube clamping button 4 is in the open, unclamped or unlocked position. The yarn guide tube clamping button 6 also has formed therein the slot 2'! which receives a screw driver or its equivalent used in turning said clamping button.

The yarn guide tube clamping button 4 is so positioned in the finger 5 that when said button 4 is in the clamping position it will protrude into the yarn guide tube receiving chamber 9 a distance slightly greater than the total diametric clearance space between the walls of said bore 9 and the outer walls 29 of the yarn guide tube 3. In the embodiment shown in the drawings the diameter of the cylindrical yarn guide tube receiving chamber or bore 9 is .068 inches and the outside diameter of the yarn guide tube 3 is .006 inches. This results in a total diametric clearance of .002 between the walls 25 and 3| of the bore 9 and the outer walls 29 of the yarn guide tube 3. The diameter of the yarn guide tube clamping button receiving aperture [5 is .10 inches and the diameter of the yarn guide tube clamping button is .099 inches. The distance D from the axi A-A of the bore 9 to the axis BB of the yarn guide tube clamping button receiving aperture is .0814 inches. As a result the body portion i8 of the yarn guide tube clamping button 4 extends .0021 inches into the bore 9 through the communicating opening 23. This is .000 inches more than the total diametric clearance space between the walls 26 and 3: of the bore 9 and yarn guide tube wall 28 and is sufiicient to cause the face 30 of the yarn guide tube clamping button 4 to co-operate with the Wall 31 of the bore 9 firmly to clamp the yarn guide tube in the desired position shown in Figs. 1, l2, l3 and 14.

It is obvious from the drawings that to clamp or look the yarn guide tube 3 in the operative position within the yarn carrier 1 one places a screw driver edge or its equivalent within the slot 2'! of the yarn guide tube clamping button 4, turns said button to the position shown in Figs. 9, 10 and 11, inserts the yarn guide tube 3 into the yarn guide tube receiving chamber 9 and then turns the yarn guide tube clamping button 4 to the position shown in Figs. 1, 12, 13 and 14. To remove the yarn guide tube 3 from yarn guide I one turns the yarn guide tube clamping button 4 from the position shown in Figs. 1, 12, 13 and 14 to that shown in Figs. 9, 10 and 11 and pulls out said yarn guide tube 3.

The yarn guide clamping button E0 shown in Figs. 7 and 8 differs from the yarn guide clamping button shown in Figs. 5 and 6 only in the following particulars:

1. Instead of being solid it has a bore 4| formed therein.

2. The indentation 42 is of a different shape from the indentation 25.

Having described my invention what I claim as new and useful is:

1. A yarn carrier consisting of a body member terminating in two fingers having formed between them a yarn guide tube receiving chamber and having formed in one of them a yarn guide tube clamping button receiving chamber, said yarn guide tube clamping button receiving chamber communicating with said yarn guide tube receiving chamber; a yarn guide tube clamping button having a continuous outer-wall having an indentation formed therein positioned in said yarn guide tube clamping button receiving chamber for movement to a yarn guide tube clamping and unclamping position, said position of said yarn guide tube clamping button being such that when said yarn guide tube clamping button is in the clamping position a portion thereof extends into said yarn guide tube receivin chamber a distance slightly greater than the total diametric clearance between said yarn guide tube receiving chamber walls and the outside walls of said yarn guide tube which is to be positioned and clamped in said yarn guide tube receiving chamber and said indenc tation being of such a depth and shape that when said yarn guide tube clamping button is in the unclamping position no portion thereof will extend into said yarn guide tube receiving chamber.

2. A yarn carrier consistin of a body member terminating in two fingers having formed between them a yarn guide tube receiving chamber and having formed in one of them a yarn guide tube clamping button receiving chamber, said yarn guide tube clamping button receiving chamber communicating with said yarn guide tube receiving chamber; and a solid yarn guide tube clamping button havin an indentation formed in the outer-wall thereof positioned in said yarn guide tube clamping button receiving chamber for movement to a yarn guide tube clamping and unclamping position, said position of said yarn guide tube clamping button being such that when said yarn guide tube clamping button is in the clamping position a portion thereof extends into said yarn guide tube receiving chamber a distance slightly greater than the total diametric clearance between said yarn guide tube receiving chamber walls and the outside walls of the yarn guide tube which is to be positioned and clamped in said yarn guide receiving chamber and said indentation being of a depth and shape that when said yarn guide tube clamping button is in the unclamping position no portion thereof will extend into said yarn guide tube receiving chamber.

3. A yarn carrier consisting of a body member terminating in two fingers terminating at their upper ends in a slit leading into a slot and having formed between them a yarn guide tube receiving chamber and havin formed in one of them a cylindrical yarn guide tube clamping button receiving chamber, said yarn guide tube clamping button receiving chamber communicating with said yarn guide tube receiving chamber; a yarn guide tube positioned in said yarn guide tube receiving chamber; and a solid cylindrical yarn guide tube clamping button having an indentation formed in the outer-wall thereof positioned in said yarn guide tube clamping button receiving chamber for movement to a yarn guide tube clamping and unclamping position, said position of said yarn guide tube clamping button being such that when said yarn guide tube clamping button is in the clamping position a portion thereof extends into said yarn guide tube receiving chamber a distance slightly greater than the total diametric clearance between said yarn guide tube receiving chamber walls and the outside walls of said yarn guide tube and said indentation being of a depth and shape that when said yarn guide tube clamping button is in the unclamping position no portion thereof will extend into said yarn guide tube receiving chamber.

4. A yarn carrier comprising an elongated body member terminating in a pair of spaced fingers, a longitudinally extending cylindrical chamber formed in said body member and opening into the space between said fingers, a cylindrical yarn guide tube loosely received in said chamber, and a means for selectively clamping and unclamping said yarn guide tube, said means includin a button mounted for rotation in said body member adjacent said chamber, said button having a continuously peripheral wall with an indented portion whereby in one position of rotation of said button, said indented portion opens into said chamber to unclamp said yarn guide tube and in another position of rotation of said button part of the unindented portion of said peripheral wall enters said chamber and frictionally clamps said yarn guide tube against an inner wall of said chamber.

5. A yarn carrier comprising an elongated body member terminating in a pair of spaced fingers, a longitudinally extending cylindrical chamber formed in said body member and opening into the space between said fingers, said chamber being adapted to loosely receive a yarn guide tube, and a button mounted for rotation in said body member adjacent said chamber, said button having a continuous peripheral wall with an indented portion whereby upon rotation of said button in one position, the indented portion opens into said chamber to allow clearance for a yarn guide tube adapted to enter said chamber and whereby upon rotation of said button to another position a part of the unindented portion of said peripheral wall will enter said chamber to frietionally clamp a yarn guide tube adapted to be positioned in said chamber against an inner wall of said chamber.

6. A yarn carrier comprising a body member terminating in a pair of spaced fingers with a chamber formed therein opening into the space between said fingers, a yarn guide tube loosely received in said chamber and a button rotatably mounted in said body member adjacent said chamber, said button including a continuous peripheral wall with an indented portion whereby rotation of said button to one position where said indented portion opens into said chamber clearance for said yarn guide tube will be provided to unclamp the same, the position of said button relative to said chamber being such that when said button is rotated to another position, a part of the unindented portion of said peripheral wall will enter said chamber a distance slightly greater than the clearance between said yarn guide tube and the walls of said chamber to frictionally clamp said yarn guide tube against one of the walls of said chamber.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 2,076,751 'I'hierfelder Apr. 13, 1937 2,218,978 Weisbecker Oct. 22, 194.0 2,228,627 Hofmann Jan. 14, 1941 2,275,848 Feustel Mar. 10, 194 2,302,727 Weisbecker Nov. 24, 194 2,376,643 Weisbecker May 22, 1945 

